Diffuser



FIG. 1 is a front perspective view of the design in accordance with theinvention;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a right elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a left elevation view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a top plan view thereof; and,

FIG. 9 is a front, perspective, exploded view thereof.

The broken lines shown in the drawings are for illustrative purposesonly and form no part of the claimed design.

The ornamental design for a diffuser, as shown and described.